package com.fish.anne.webapp.util;

import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.List;
import java.util.Map;
import java.util.Set;

import net.sf.json.JSONArray;


public class ParseJsonUtil {
	public static String parseListToJson(List list){
		JSONArray jsonList = JSONArray.fromObject(list); 
		return jsonList.getString(1);
	}
	
	//private static Log log = LogFactory.getLog(ParseJsonUtil.class);
	public static String object2json(Object obj) {
	             StringBuilder json = new StringBuilder();
	             if (obj == null) {
	               json.append("\"\"");
	             } else if (obj instanceof String || obj instanceof Integer || obj instanceof Float
	                 || obj instanceof Boolean || obj instanceof Short || obj instanceof Double
	                 || obj instanceof Long || obj instanceof BigDecimal || obj instanceof BigInteger
	                 || obj instanceof Byte) {
	               json.append("\"").append(string2json(obj.toString())).append("\"");
	             } else if (obj instanceof Object[]) {
	               json.append(array2json((Object[]) obj));
	             } else if (obj instanceof List) {
	               json.append(list2json((List<?>) obj));
	             } else if (obj instanceof Map) {
	               json.append(map2json((Map<?, ?>) obj));
	             } else if (obj instanceof Set) {
	               json.append(set2json((Set<?>) obj));
	             } else {
	               json.append(bean2json(obj));
	             }
	             return json.toString();
	  }
	public static String bean2json(Object bean) {
	             StringBuilder json = new StringBuilder();
	             json.append("{");
	             PropertyDescriptor[] props = null;
	             try {
	               props = Introspector.getBeanInfo(bean.getClass(), Object.class).getPropertyDescriptors();
	             } catch (IntrospectionException e) {}
	             if (props != null) {
	               for (int i = 0; i < props.length; i++) {
	                 try {
	                   String name = object2json(props[i].getName());
	                   String value = object2json(props[i].getReadMethod().invoke(bean));
	                   json.append(name);
	                   json.append(":");
	                   json.append(value);
	                   json.append(",");
	                 } catch (Exception e) {}
	               }
	               json.setCharAt(json.length() - 1, '}');
	             } else {
	               json.append("}");
	             }
	             return json.toString();
	  }
	public static String list2json(List<?> list) {
	             StringBuilder json = new StringBuilder();
	             json.append("[");
	             if (list != null && list.size() > 0) {
	               for (Object obj : list) {
	                 json.append(object2json(obj));
	                 json.append(",");
	               }
	               json.setCharAt(json.length() - 1, ']');
	             } else {
	               json.append("]");
	             }
	             return json.toString();
	  }
	public static String array2json(Object[] array) {
	             StringBuilder json = new StringBuilder();
	             json.append("[");
	             if (array != null && array.length > 0) {
	               for (Object obj : array) {
	                 json.append(object2json(obj));
	                 json.append(",");
	               }
	               json.setCharAt(json.length() - 1, ']');
	             } else {
	               json.append("]");
	             }
	             return json.toString();
	  }
	public static String map2json(Map<?, ?> map) {
	             StringBuilder json = new StringBuilder();
	             json.append("{");
	             if (map != null && map.size() > 0) {
	               for (Object key : map.keySet()) {
	                 json.append(object2json(key));
	                 json.append(":");
	                 json.append(object2json(map.get(key)));
	                 json.append(",");
	               }
	               json.setCharAt(json.length() - 1, '}');
	             } else {
	               json.append("}");
	             }
	             return json.toString();
	  }
	public static String set2json(Set<?> set) {
	             StringBuilder json = new StringBuilder();
	             json.append("[");
	             if (set != null && set.size() > 0) {
	               for (Object obj : set) {
	                 json.append(object2json(obj));
	                 json.append(",");
	               }
	               json.setCharAt(json.length() - 1, ']');
	             } else {
	               json.append("]");
	             }
	             return json.toString();
	  }
	public static String string2json(String s) {
	             if (s == null)
	               return "";
	             StringBuilder sb = new StringBuilder();
	             for (int i = 0; i < s.length(); i++) {
	               char ch = s.charAt(i);
	               switch (ch) {
	               case '"':
	                 sb.append("\\\"");
	                 break;
	               case '\\':
	                 sb.append("\\\\");
	                 break;
	               case '\b':
	                 sb.append("\\b");
	                 break;
	               case '\f':
	                 sb.append("\\f");
	                 break;
	               case '\n':
	                 sb.append("\\n");
	                 break;
	               case '\r':
	                 sb.append("\\r");
	                 break;
	               case '\t':
	                 sb.append("\\t");
	                 break;
	               case '/':
	                 sb.append("\\/");
	                 break;
	               default:
	                 if (ch >= '\u0000' && ch <= '\u001F') {
	                   String ss = Integer.toHexString(ch);
	                   sb.append("\\u");
	                   for (int k = 0; k < 4 - ss.length(); k++) {
	                     sb.append('0');
	                   }
	                   sb.append(ss.toUpperCase());
	                 } else {
	                   sb.append(ch);
	                 }
	               }
	             }
	             return sb.toString();
	  }
}
